Transition densities in Si30 studied by electron scattering and coupled-channel calculations of 650 MeV proton scattering

R. A. Miskimen, A. M. Bernstein, G. Bernhardt, C. F. Williamson, B. A. Brown, R. Alarcon

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Proton and neutron transition densities in Si30 are examined by a combination of intermediate energy (e,e) and (p,p) reactions and mirror electromagnetic transition rates. This analysis is performed for the 21+ and 22+ states at 2.234 and 3.499 MeV in Si30. Electron scattering data are presented for these states. Shell-model calculations for the proton and neutron transition matrix elements and proton transition densities are compared with the electromagnetic results. The proton transition densities are reasonably predicted for the 21+ state but are not adequately predicted for the 22+ state. A microscopic coupled-channel calculation of 650 MeV (p,p) is used to test the shell-model isoscalar transition densities. Given the uncertainties present in the reaction calculation and interaction, the isoscalar density for the 21+ state is found to be adequate, but the density for the 22+ state is less accurate. The coupled-channel effect is shown to be important for the 22+ state. This dependence increases with energy but should be taken into account for an accurate description of (p,p) reactions at all energies.

Original languageEnglish (US)
Pages (from-to)1600-1608
Number of pages9
JournalPhysical Review C
Volume37
Issue number4
DOIs
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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